方便快捷实现springboot 后端配置多个数据源、Mysql数据库

目录

• 1）Test1DataSourceConfig.java
• 2）Test2DataSourceConfig.java

1、修改application.properties

新建 Mapper、实体类 相应的文件夹，将不同数据源的文件保存到对应的文件夹下

# test1 数据库的配置 test1.spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver test1.spring.datasource.jdbc-url=jdbc:mysql://localhost:3306/database1?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=GMT test1.spring.datasource.username=usernametest1.spring.datasource.password=password # test2 数据库的配置test2.spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver test2.spring.datasource.jdbc-url=jdbc:mysql://localhost:3306/database2?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=GMT test2.spring.datasource.username=username test2.spring.datasource.password=password # 配置 mybatis 配置 mapper.xml 文件路径mybatis.mapper-locations=classpath:/mapper/*.xml,classpath:/mapper/test1/*.xml,classpath:/mapper/test2/*.xml # 配置 mybatis 配置 实体类 文件路径 mybatis.type-aliases-package=com.xxx.entity.test1, com.xxx.entity.test2

2、添加绑定数据库配置Config

1）Test1DataSourceConfig.java

package com.xxx.config.dataSource; import com.alibaba.druid.pool.DruidDataSource; import org.apache.ibatis.session.SqlSessionFactory; import org.mybatis.spring.SqlSessionFactoryBean; import org.mybatis.spring.annotation.MapperScan; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.beans.factory.annotation.Value; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.context.annotation.Primary; import org.springframework.core.io.support.PathMatchingResourcePatternResolver; import org.springframework.jdbc.datasource.DataSourceTransactionManager; import javax.sql.DataSource; /** * @program: test1 主数据源配置 * @author: JackLee * @create: 2020-08-09 09:30 * @version: 1.0 **/ // 扫描 Mapper 接口并容器管理 @MapperScan(basePackages = Test1DataSourceConfig.PACKAGE, sqlSessionFactoryRef = "test1SqlSessionFactory") @Configuration public class Test1DataSourceConfig { // 精确到 test1 目录，以便跟其他数据源隔离 static final String PACKAGE = "com.xxx.dao.test1"; static final String MAPPER_LOCATION = "classpath:mapper/test1/*.xml"; @Value("${test1.spring.datasource.jdbc-url}") private String url; @Value("${test1.spring.datasource.username}") private String user; @Value("${test1.spring.datasource.password}") private String password; @Value("${test1.spring.datasource.driver-class-name}") private String driverClass; @Bean(name = "test1DataSource") @Primary public DataSource test1DataSource() { DruidDataSource dataSource = new DruidDataSource(); dataSource.setDriverClassName(driverClass); dataSource.setUrl(url); dataSource.setUsername(user); dataSource.setPassword(password); return dataSource; } @Bean(name = "test1TransactionManager") @Primary public DataSourceTransactionManager test1TransactionManager() { return new DataSourceTransactionManager(test1DataSource()); } @Bean(name = "test1SqlSessionFactory") @Primary public SqlSessionFactory test1SqlSessionFactory(@Qualifier("test1DataSource") DataSource test1DataSource) throws Exception { final SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean(); sessionFactory.setDataSource(test1DataSource); sessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver() .getResources(Test1DataSourceConfig.MAPPER_LOCATION)); return sessionFactory.getObject(); } }

2）Test2DataSourceConfig.java

package com.xxx.config.dataSource; import com.alibaba.druid.pool.DruidDataSource; import org.apache.ibatis.session.SqlSessionFactory; import org.mybatis.spring.SqlSessionFactoryBean; import org.mybatis.spring.annotation.MapperScan; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.beans.factory.annotation.Value; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.core.io.support.PathMatchingResourcePatternResolver; import org.springframework.jdbc.datasource.DataSourceTransactionManager; import javax.sql.DataSource; /** * @program: test2 其他数据源配置 * @author: JackLee * @create: 2020-08-09 09:30 * @version: 1.0 **/ // 扫描 Mapper 接口并容器管理 @MapperScan(basePackages = Test2DataSourceConfig.PACKAGE, sqlSessionFactoryRef = "test2SqlSessionFactory") @Configuration public class Test2DataSourceConfig { // 精确到 test2 目录，以便跟其他数据源隔离 static final String PACKAGE = "com.xxx.dao.test2"; static final String MAPPER_LOCATION = "classpath:mapper/test2/*.xml"; @Value("${test2.spring.datasource.jdbc-url}") private String url; @Value("${test2.spring.datasource.username}") private String user; @Value("${test2.spring.datasource.password}") private String password; @Value("${test2.spring.datasource.driver-class-name}") private String driverClass; @Bean(name = "test2DataSource") public DataSource test2DataSource() { DruidDataSource dataSource = new DruidDataSource(); dataSource.setDriverClassName(driverClass); dataSource.setUrl(url); dataSource.setUsername(user); dataSource.setPassword(password); return dataSource; } @Bean(name = "test2TransactionManager") public DataSourceTransactionManager test2TransactionManager() { return new DataSourceTransactionManager(test2DataSource()); } @Bean(name = "test2SqlSessionFactory") public SqlSessionFactory test2SqlSessionFactory(@Qualifier("test2DataSource") DataSource test2DataSource) throws Exception { final SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean(); sessionFactory.setDataSource(test2DataSource); sessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver() .getResources(Test2DataSourceConfig.MAPPER_LOCATION)); return sessionFactory.getObject(); } }

搞定，轻轻松松~

注：

•  mapper文件夹下新建的文件夹需要有 *.xml 文件（ 即:classpath:/mapper/xxx/*.xml下要存在文件 ），不然可能
• 检测不到需要继续添加数据源就再加一个其他数据源

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